/*
 * Copyright (c) 2010, German Buela
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * The name of German Buela may not be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY GERMAN BUELA "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL GERMAN BUELA BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.gbuela.winco.view

import org.eclipse.swt._
import org.eclipse.swt.SWT
import org.eclipse.swt.custom._
import org.eclipse.swt.widgets._
import com.gbuela.swt._
import com.gbuela.winco.business._

trait TabView {
  val tf: SwincoTabFolder
  val launcher: PlayerLauncher
  val tabText: String
  val d = tf.tabFolder.getDisplay
  val closable = true
  val data: Any
  private var rootComposite: Composite = null
  
  protected var item:CTabItem = null
  private var tabComposite:Composite = null
  
  def init:Unit
  def reset = { tabComposite = makeTabComposite }
  def redisplay = rootComposite.layout(true,true)
  
  protected def doWithRefresh(task: => Unit): Unit = {
    reset
    task
    init
    redisplay
  }
  
  def getTabItem: CTabItem = {
    if(item == null || item.isDisposed) {
       item = new CTabItem(tf.tabFolder, 
                           if(closable) SWT.CLOSE else SWT.NONE, 
                           if(tf.customViewOpen && !(this.isInstanceOf [CustomPlaylistView])) tf.itemCount - 1 else tf.itemCount)
       item.setData(data)
     }
    item
  }

  private def makeTabComposite:Composite = {
	  item = getTabItem
	  item.setText(tabText)
	  val (sc,tabComp) = SWTScrollComp(tf.tabFolder)
      rootComposite = sc
	  item.setControl(rootComposite)
      tabComp
  }
  def select:Unit = tf.tabFolder.setSelection(item)
  
  def addContent(e: => SwtElem):Unit = addContent { e :: Nil }
  def addContent(elems: scala.List[SwtElem]) :Unit = {
    if(tabComposite == null) tabComposite = makeTabComposite
    elems foreach  {_ hangFrom tabComposite}
    }
}
